SHENZHEN DDW TECHNOLOGY CO.,LTD Company News

32” high brightness digital signage Key Features 1 . 32 inch high brightness LCD Module , 1500nits brightness , 1920x1080 resolution , 4000:1 contrast with LED backlight , Sunlight viewable 2 . Patented LED backlight modular components + constant current source drive components 3 . Patented cooling structure combination of high-quality fan assembly 4 . Quad cores CPU 8Gb memory , Latest Android OS network version support LAN control , WIFI control , USB , CF , SD slots , support HDMI VGA input,3G(optional) 5 . Automatic ambient light adjustment control (extended life and energy efficiency) 6 . Built-in power adapter combination AC220V/DC 7 . IP65 grade all waterproof and dustproof metal enclosure +6mm optical protective glass + air cooling/heating system 8 . Highly fortified AR glass , protect the LCD screen from direct injury , played the role of anti-riot 9 . Rackmount LCD display module + built-in anti-theft locks , patented a unique , easy to disassemble and maintain the site , a unique patent 10 . A/C automatic fans Cooling/Heating system , thickness 14cm , Intelligent condition monitoring,real-time detection equipment vibration , temperature and humidity parameters such as power supply , timely warning , Working temperature: -20℃ - 50℃ 11 . Frame(fit with single side screen) can be customized exactly same as client provided Parameters LCD parameters Model No. DDW-AD3201O display 32" LED Contrast Ratio 16:9 machine size 1130*684*55 Display area 1040x585 Maximum resolution 1920x1080 Pixel Pitch(mm) 0.1805×0.5415 mm Display color 1.073G(10bits/color) Life(hrs) >60,000(hrs) average brightness 1500-2500cd/m*m contrast 4000:1 Viewing angle H178°/V178° Power supply AC100~240V 50 /60 HZ Maximum power consumption 3600W Standby power consumption

37” high brightness digital signage Key Features   1, 37 inch high brightness LCD Module ,1500nits brightness , 1920x1080 resolution , 4000/1 contrast with LED backlight , Sunlight viewable 2, Patented LED backlight modular components + constant current source drive components 3, Patented cooling structure combination of high-quality fan assembly 4, Quad cores CPU 8Gb memory , Latest Android OS network version support LAN control , WIFI control , USB , CF , SD slots , support HDMI VGA input , 3G(optional) 5, Automatic ambient light adjustment control (extended life and energy efficiency) 6, Built-in power adapter combination AC220V/DC 7, IP65 grade all waterproof and dustproof metal enclosure +6mm optical protective glass + air cooling/heating system 8, Highly fortified AR glass , protect the LCD screen from direct injury , played the role of anti-riot 9, Rackmount LCD display module + built-in anti-theft locks , patented a unique , easy to disassemble and maintain the site , a unique patent 10, A/C automatic fans Cooling/Heating system , thickness 14cm , Intelligent condition monitoring , real-time detection equipment vibration , temperature and humidity parameters such as power supply , timely warning , Working temperature -20℃ - 50℃ 11, Frame(fit with single side screen) can be customized exactly same as client provided   Functions   1, Video format MPEG1/MPEG2/MPEG4/DivX/ASP/WMV/AVI 2, Audio format Wave/MP3/WMA/AAC 3, Image format JPEG/BMP/TIFF/PNG/GIF 4, Image resolution 480P/720P 5,Play mode:Power on , single card auto loop play classified files auto loop play multi cards 6,Time year/month/day/week/h/m/s , in the top right corner (open and close optional) 7,Timing open & close:Per day 5 times , 7 days a week,free time 8, Timing play 7 days a week,free set the play program everyday       Parameters   LCD parameters Model No. DDW-AD3701SNO display 37" LED Contrast Ratio 16/9 machine size 868x525x50 Display area 765x430 Maximum resolution 1920x1080 Pixel Pitch(mm) 0.4845×0.4845mm Display color 1.073G(10bits/color) Life(hrs) >60,000(hrs) average brightness 1500-2500cd/mxm contrast 3500/1 Viewing angle H178°/V178° Power supply AC100~240V 50 /60 HZ Maximum power consumption 3600W Standby power consumption

  Key Features: 1. Advanced pure hardware structure 2. Special virtual display technology 3. CAN controlling technology 4. All digitalized processing 5. Full Channel HD 1080P signal processing 6. Powerful image processing capability 7. Flexible operation control system 8. Customizable character overlay function 9. Easy control mode 10. The input signals are selectable Product Description   Technical Specifications Model series With CBD No CBD Function description 4channel CBD,16channel AV, 12channel VGA/DVI input, 6U case supports 12 screens arrays, compatible with ultra-high resolution 4000/(8000)x2000 Dynamic background image 16channel AV,16channel VGA/ DVI input,6U case supports 16screens arrays Input signal(optional) HDMI/DVI/VGA/AV/YPbPr Input resolution 1024x768~1080p,commonly used resolutions Output signal format DVI/VGA/AV/YPbPr/HDMI(DVI-HDMI converter) Output resolution Up to 1920x1200/60HZ System control software Special control software Power Supply Redundant power supply 110-220VAC, 50/60Hz Consumption 12W/channel Working temperature -20°C——60°C Working Humidity 5-95% Case specification 4U/6U/10U/15U standard rackmount chassis Serial Control Interface RS-232,9-pin female, Type-D Baud Rate 115200 Pin configuration 2=TX,3=RX,5=GND Ethernet control interface RJ-45 female, TCP/IP Ethernet control speed Auto 10M or 100M,Full-duplex or half-duplex Working time 365x7x24hrs Technical specification of input/output connectors VGA/RGB input Input: 15pin HD D-Sub, female Sync mode: HV independent sync Color Depth: 32bit/pixel Resolution: 640*480/60HZ—1920*1200/60HZ Input impedance :75Ω Video input Input connector: BNC Detecting: full-format auto detecting Input impedance :75Ω VGA or DVI output Resolution:1024x768/60HZ-1920x1200/60HZ Color depth: 32bit/pixel Output impedance:75Ω Physical properties of input/output connectors Signals Connectors Type Composite VIDEO input BNC female VGA input 15 pin HD D-Sub female VGA output 15 pin HD D-Sub female DVI output 24+5 or 24+1 standard female AUX RS-232 9-pin D-Sub female Main RS-232 9-pin D-Sub female  

50” high brightness digital signage Key Features 1 . 50 inch high brightness LCD Module , 1500nits brightness , 1920x1080 resolution , 4000:1 contrast with LED backlight , Sunlight viewable 2 . Patented LED backlight modular components + constant current source drive components 3 . Patented cooling structure combination of high-quality fan assembly 4 . Quad cores CPU 8Gb memory , Latest Android OS network version support LAN control , WIFI control , USB , CF , SD slots , support HDMI VGA input,3G(optional) 5 . Automatic ambient light adjustment control (extended life and energy efficiency) 6 . Built-in power adapter combination AC220V/DC 7 . IP65 grade all waterproof and dustproof metal enclosure +6mm optical protective glass + air cooling/heating system 8 . Highly fortified AR glass , protect the LCD screen from direct injury , played the role of anti-riot 9 . Rackmount LCD display module + built-in anti-theft locks , patented a unique , easy to disassemble and maintain the site , a unique patent 10 . A/C automatic fans Cooling/Heating system , thickness 14cm , Intelligent condition monitoring,real-time detection equipment vibration , temperature and humidity parameters such as power supply , timely warning , Working temperature: -20℃ - 50℃ 11 . Frame(fit with single side screen) can be customized exactly same as client provided Parameters LCD parameters Model No. DDW-AD5001O display 50" LED Contrast Ratio 16:9 machine size 1130*684*55 Display area 1040x585 Maximum resolution 1920x1080 Pixel Pitch(mm) 0.1805×0.5415 mm Display color 1.073G(10bits/color) Life(hrs) >60,000(hrs) average brightness 1500-2500cd/m*m contrast 4000:1 Viewing angle H178°/V178° Power supply AC100~240V 50 /60 HZ Maximum power consumption 3600W Standby power consumption

Software-based PC & video-card controllers   Software-based PC & video-card controllers is a computer running an operating system (e.g., Windows, Linux, Mac) in a PC or server equipped with special multiple-output graphic cards and optionally with video capture input cards. These video wall controllers are often built on industrial-grade chassis due to the reliability requirements of control rooms and situational centers. Though this approach is typically more expensive, the advantage of a software-based video wall controller vs the hardware splitter is that it can launch applications like maps, VoIP client (to display IP cameras), SCADA clients, Digital Signage software that can directly utilize the full resolution of the video wall. That is why software-based controllers are widely used in control rooms and high-end Digital Signage.The performance of the software controller depends on both the quality of graphic cards and management software. There are a number of multi-head (multiple output) graphic cards commercially available.   Most of general purpose multi-output cards manufactured by AMD (Eyefinity technology), NVidia (Mosaic technology) support up to 6-12 genlocked outputs.[citation needed] General purpose cards also do not have optimizations for displaying multiple video streams from capture cards. To achieve larger number of displays or high video input performance one needs to use specialized graphic cards (e.g. Datapath Limited, Matrox Graphics, Jupiter Systems). Video wall controllers typically support bezel correction (outside frame of monitor) to correct for any bezel with LED displays or overlap the images to blend edges with projectors.

Quick Details Place of Origin: Guangdong, China (Mainland) Brand Name: DDW Model Number: DDW-CM2601     Panel size: 26" tft-lcd 16:9 Resolution: Quad cctv monitor Contrast Ratio: 1500:1     Brightness: 450cd/m2 Interface Type: D-Sub, DVB, DVI, HDMI, RS232C, S-Video, TV-out, YPBPR Display area(mm)/mode: 575x325mm     Visual angle: 178°/178° Respnse time: 5ms Lfie hours: >60,000.00     Display Color: 16.7M Specification Item Parameter LCD Model 26” Resolution 1366x768 LCD panel Industry LCD panel Area 575x325mm Screen ratio 16:9 Contrast rate 1500:1 Response time 5ms Brightness 450cd/m2 Viewing angle 178/178 Color 16.7M colors Vertical frequency 56-75KHZ Horizontal frequency 30-75KHZ Using life >60,000hrs Language Multi-languages Driver board INPUT Ports VGA,DVI,HDMI,AV*3, YPbPr,YC Output ports AV*2 Color format PAL,NTSC,SECAM 3D digital comb filter support Video noise reduction support Power Power supply AC100~240V 50 /60 HZ power consumption

Video and Image Processing : 1. Any Rectangular Video Wall Configuration can be supported. Screen order can be configured 2. Inputs/windows can be resized, layered and positioned across screen boundaries 3. Inputs/windows can be displayed in correct aspect ratio,stretched to fit,in full screen mode,or zoomed in to emphasize details 4. Input sources can be cropped to remove the edge pixels and lines 5. Dual-Link DVI Input (capture) cards support 4K ×4K resolution or a customizable resolution. Any source can be captured     Some of the Video Wall Controller Parameters:   Vertical/Horizontal Display Support Combine Display Support combine any horizontal &vertical numbers of screens and show display Support combine all screens together to show 1image Solid Display Support each screen input with separate signal PIP/Zoom/Roaming Support open one window for each screen, each window can be zoomed &roaming internal freely iPad/iPhone remote control Support customized APP remote control Signal preview function Support Audit/Preview signal before output to windows/video wall screens Scene management Support Multiple scenes management/recall function Support scenes cycle broadcast Support scenes cycle broadcast function Multiple Interfaces Support multiple DVI,HDMI,VGA,AV inputss &multiple signal outputs Rich Resolution Support 1080P,1080I,720P,480P &multiple resolution inputs Standard Packing Double layer carton box pack Weight 5-100kg 6kg-110kg Detail Parameters: Technical Specifications Model series With CBD No CBD Function description 4channel CBD,16channel AV, 12channel VGA/DVI input, 6U case supports 12 screens arrays, compatible with ultra-high resolution 4000/(8000)x2000 Dynamic background image 16channel AV,16channel VGA/ DVI input,6U case supports 16screens arrays Input signal(optional) HDMI/DVI/VGA/AV/YPbPr Input resolution 1024x768~1080p,commonly used resolutions Output signal format DVI/VGA/AV/YPbPr/HDMI(DVI-HDMI converter) Output resolution Up to 1920x1200/60HZ System control software Special control software Power Supply Redundant power supply 110-220VAC, 50/60Hz Consumption 12W/channel Working temperature -20°C——60°C Working Humidity 5-95% Case specification 4U/6U/10U/15U standard rackmount chassis Serial Control Interface RS-232,9-pin female, Type-D Baud Rate 115200 Pin configuration 2=TX,3=RX,5=GND Ethernet control interface RJ-45 female, TCP/IP Ethernet control speed Auto 10M or 100M,Full-duplex or half-duplex Working time 365x7x24hrs Technical specification of input/output connectors VGA/RGB input Input: 15pin HD D-Sub, female Sync mode: HV independent sync Color Depth: 32bit/pixel Resolution: 640*480/60HZ—1920*1200/60HZ Input impedance :75Ω Video input Input connector: BNC Detecting: full-format auto detecting Input impedance :75Ω VGA or DVI output Resolution:1024x768/60HZ-1920x1200/60HZ Color depth: 32bit/pixel Output impedance:75Ω Physical properties of input/output connectors Signals Connectors Type Composite VIDEO input BNC female VGA input 15 pin HD D-Sub female VGA output 15 pin HD D-Sub female DVI output 24+5 or 24+1 standard female AUX RS-232 9-pin D-Sub female Main RS-232 9-pin D-Sub female    

Key Features   1, 60 inch high brightness LCD Module ,2000nits brightness , 1920x1080 resolution , 4000/1 contrast with LED backlight , Sunlight viewable 2, Patented LED backlight modular components + constant current source drive components 3, Patented cooling structure combination of high-quality fan assembly 4, Quad cores CPU 8Gb memory , Latest Android OS network version support LAN control , WIFI control , USB , CF , SD slots , support HDMI VGA input , 3G(optional) 5, Automatic ambient light adjustment control (extended life and energy efficiency) 6, Built-in power adapter combination AC220V/DC 7, IP65 grade all waterproof and dustproof metal enclosure +6mm optical protective glass + air cooling/heating system 8, Highly fortified AR glass , protect the LCD screen from direct injury , played the role of anti-riot 9, Rackmount LCD display module + built-in anti-theft locks , patented a unique , easy to disassemble and maintain the site , a unique patent     Functions   1, Video format MPEG1/MPEG2/MPEG4/DivX/ASP/WMV/AVI 2, Audio format Wave/MP3/WMA/AAC 3, Image format JPEG/BMP/TIFF/PNG/GIF 4, Image resolution 480P/720P 5,Play mode:Power on , single card auto loop play classified files auto loop play multi cards 6,Time year/month/day/week/h/m/s , in the top right corner (open and close optional) 7,Timing open & close:Per day 5 times , 7 days a week,free time       Parameters   LCD parameters Model No. DDW-AD6001SNO display 60" LED Contrast Ratio 16/9 machine size 1561x883x56 Display area 1298x764 Maximum resolution 1920x1080 Pixel Pitch(mm) 0.651×0.651mm Display color 1.073G(10bits/color) Life(hrs) >60,000(hrs) average brightness 1500-2500cd/mxm contrast 3500/1 Viewing angle H178°/V178° Power supply AC100~240V 50 /60 HZ Maximum power consumption 3600W Standby power consumption

Product Detail Basic Info Model NO.:DDW-LW5553 Type:LCD Monitor Size:≥42" Color:Color HDMI Format:1080P Application:Computer Feature:Touch Display Certification:CE, RoHS, ISO9001: 2000 Interface Type:HDMI Horizontal Resolution:520tvl Screen:General Screen Scanning:Interlacing Material:LCD Sensor:CCD Place of Origin: China (Mainland):Brand Name: Foretell Model Number: FT-P5553SL-E:Type: TFT Application: Indoor:Panel Size: 55 Inch Max Resolution: 1920*1080:Viewing Angle: 178 /178 Pixel Pitch: 0.5415*0.5415:Color: 16.7m Contrast Ratio: 4000:1:Brightness: 450CD/M2 Response Time: 10ms:Input Voltage: 100-240V OSD Language: Chinese English:Name: LCD Video Wall Product Description 55" Specifications Model No. DDW-LW5553 Panel Size 55"Samsung DID LCD Screen(narrow bezel 5.3mm) Max resolution 1920X1080 Screen Size [inch/cm] 55 inch Panel Technology S-PVA TFT with direct white LED backlights Aspect Ratio 16:9 Color 8Bit,16.7M Visual Angle (H/V) 178°/178° Response Time 60,000(hrs) Input and output   DVI 1 HDMI 1 D15-RGB Input(VGA) 1 RJ45 2 Composit video input(AV) 2(2xBNC) Composit video input 2(2xBNC) Split screen Support picture in picture(PIP/POP/PAP) Power   Power supply AC100V~240V Maximum power consumption 230W Standby comsuption

Video and Image Processing : 1. Any Rectangular Video Wall Configuration can be supported. Screen order can be configured 2. Inputs/windows can be resized, layered and positioned across screen boundaries 3. Inputs/windows can be displayed in correct aspect ratio,stretched to fit,in full screen mode,or zoomed in to emphasize details 4. Input sources can be cropped to remove the edge pixels and lines 5. Dual-Link DVI Input (capture) cards support 4K ×4K resolution or a customizable resolution. Any source can be captured     Some of the Video Wall Controller Parameters:   Vertical/Horizontal Display Support Combine Display Support combine any horizontal &vertical numbers of screens and show display Support combine all screens together to show 1image Solid Display Support each screen input with separate signal PIP/Zoom/Roaming Support open one window for each screen, each window can be zoomed &roaming internal freely iPad/iPhone remote control Support customized APP remote control Signal preview function Support Audit/Preview signal before output to windows/video wall screens Scene management Support Multiple scenes management/recall function Support scenes cycle broadcast Support scenes cycle broadcast function Multiple Interfaces Support multiple DVI,HDMI,VGA,AV inputss &multiple signal outputs Rich Resolution Support 1080P,1080I,720P,480P &multiple resolution inputs Standard Packing Double layer carton box pack Weight 5-100kg 6kg-110kg Detail Parameters: Technical Specifications Model series With CBD No CBD Function description 4channel CBD,16channel AV, 12channel VGA/DVI input, 6U case supports 12 screens arrays, compatible with ultra-high resolution 4000/(8000)x2000 Dynamic background image 16channel AV,16channel VGA/ DVI input,6U case supports 16screens arrays Input signal(optional) HDMI/DVI/VGA/AV/YPbPr Input resolution 1024x768~1080p,commonly used resolutions Output signal format DVI/VGA/AV/YPbPr/HDMI(DVI-HDMI converter) Output resolution Up to 1920x1200/60HZ System control software Special control software Power Supply Redundant power supply 110-220VAC, 50/60Hz Consumption 12W/channel Working temperature -20°C——60°C Working Humidity 5-95% Case specification 4U/6U/10U/15U standard rackmount chassis Serial Control Interface RS-232,9-pin female, Type-D Baud Rate 115200 Pin configuration 2=TX,3=RX,5=GND Ethernet control interface RJ-45 female, TCP/IP Ethernet control speed Auto 10M or 100M,Full-duplex or half-duplex Working time 365x7x24hrs Technical specification of input/output connectors VGA/RGB input Input: 15pin HD D-Sub, female Sync mode: HV independent sync Color Depth: 32bit/pixel Resolution: 640*480/60HZ—1920*1200/60HZ Input impedance :75Ω Video input Input connector: BNC Detecting: full-format auto detecting Input impedance :75Ω VGA or DVI output Resolution:1024x768/60HZ-1920x1200/60HZ Color depth: 32bit/pixel Output impedance:75Ω Physical properties of input/output connectors Signals Connectors Type Composite VIDEO input BNC female VGA input 15 pin HD D-Sub female VGA output 15 pin HD D-Sub female DVI output 24+5 or 24+1 standard female AUX RS-232 9-pin D-Sub female Main RS-232 9-pin D-Sub female    

    Large LCD splicing market competitive environment changes. Including the change of market brand pattern; This shift in the balance of power between different brands. The change of market pricing power. The three changes market comprehensive cost. This is destined to 2016 LCD splicing market a year to meet the challenge, will also be joining together the formation of a new pattern of the industry market a year. In this year, because with the concept of low carbon energy saving deepening, many products are scrambling to play on the "energy saving", "environmental protection", in the "low carbon" is eager to get a gold in the market. In liquid crystal splicing market, therefore, energy conservation and environmental protection LED back light became a hot property, coupled with the continuous development of highlighting the application, the future of LED back light liquid crystal splicing in the field of applications will be more and more broad, become the development trend.     The LED backlit LCD screen, by contrast, the power consumption of only a few watts, improve power leds, increase brightness, power consumption increase. Whereas ordinary CCFL tube backlit LCD power consumption in more than 30 w, increase in the number of the tubes, brightness increases, power consumption is also multiplied.     LCD splicing screen using the LED back light makes the picture clearer, higher contrast, also more long service life, better color saturation, ultra-thin appearance, environmental protection and energy saving advantages make LCD splicing screen won many customers in the market.     At present, the LCD splicing screen mostly adopted LED back light, may well in joining together clear picture on the wall, minimize the viewer's visual blind spots and reduce the visual sense of fragmentation, and the performance is good, stitching seam narrow, very suitable for monitoring environmental applications.

Video Wall Controller Key Features: 1. Full hardware configuration without operating system 2. High-speed bus parallel processing technology, high-bandwidth uncompressed processing 3. Real time image display, no dropped frames 4. Support display at arbitrary position, at any size and any superimposed 5. Support open-window effects processing 6. Support large-screen image freeze 7. Support 7 x 24 uninterrupted and stable working 8. Flexibility to increase the input/output board 9. Support partial input and output cards with mixed interpolation 10. Input/output card supports hot-swappable, plug-and-play functionality 11. Output resolution up to 1920 x 1200 12. Rich BNC, VGA, DVI, HDMI, SDI and RJ45 input interface, support for multiple resolutions up to 1920x1200,control via RS-232 or Ethernet 13. Support memory card or network transmission ultra-high-definition pictures, peer-to-peer ultra-high-definition mosaic wall background image 14. Redundant power supply design, thermostatically controlled fan 15. Chassis backplane + plug-in configuration, excellent performance for radiating, anti-dust chassis, equipped with replaceable air filter can be stable for a long time, even in harsh environments   Some of the Video Wall Controller Parameters:   Vertical/Horizontal Display Support Combine Display Support combine any horizontal &vertical numbers of screens and show display Support combine all screens together to show 1image Solid Display Support each screen input with separate signal PIP/Zoom/Roaming Support open one window for each screen, each window can be zoomed &roaming internal freely iPad/iPhone remote control Support customized APP remote control Signal preview function Support Audit/Preview signal before output to windows/video wall screens Scene management Support Multiple scenes management/recall function Support scenes cycle broadcast Support scenes cycle broadcast function Multiple Interfaces Support multiple DVI,HDMI,VGA,AV inputss &multiple signal outputs Rich Resolution Support 1080P,1080I,720P,480P &multiple resolution inputs Standard Packing Double layer carton box pack Weight 5-100kg 6kg-110kg Detail Parameters: Technical Specifications Model series With CBD No CBD Function description 4channel CBD,16channel AV, 12channel VGA/DVI input, 6U case supports 12 screens arrays, compatible with ultra-high resolution 4000/(8000)x2000 Dynamic background image 16channel AV,16channel VGA/ DVI input,6U case supports 16screens arrays Input signal(optional) HDMI/DVI/VGA/AV/YPbPr Input resolution 1024x768~1080p,commonly used resolutions Output signal format DVI/VGA/AV/YPbPr/HDMI(DVI-HDMI converter) Output resolution Up to 1920x1200/60HZ System control software Special control software Power Supply Redundant power supply 110-220VAC, 50/60Hz Consumption 12W/channel Working temperature -20°C——60°C Working Humidity 5-95% Case specification 4U/6U/10U/15U standard rackmount chassis Serial Control Interface RS-232,9-pin female, Type-D Baud Rate 115200 Pin configuration 2=TX,3=RX,5=GND Ethernet control interface RJ-45 female, TCP/IP Ethernet control speed Auto 10M or 100M,Full-duplex or half-duplex Working time 365x7x24hrs Technical specification of input/output connectors VGA/RGB input Input: 15pin HD D-Sub, female Sync mode: HV independent sync Color Depth: 32bit/pixel Resolution: 640*480/60HZ—1920*1200/60HZ Input impedance :75Ω Video input Input connector: BNC Detecting: full-format auto detecting Input impedance :75Ω VGA or DVI output Resolution:1024x768/60HZ-1920x1200/60HZ Color depth: 32bit/pixel Output impedance:75Ω Physical properties of input/output connectors Signals Connectors Type Composite VIDEO input BNC female VGA input 15 pin HD D-Sub female VGA output 15 pin HD D-Sub female DVI output 24+5 or 24+1 standard female AUX RS-232 9-pin D-Sub female Main RS-232 9-pin D-Sub female