Asus Q87M-E User Guide - Page 21
Internal connectors, Q87M-E Serial portCOM connectors
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10. USB 2.0 ports 7 and 8. These two 4-pin Universal Serial Bus (USB) ports are for USB 2.0/1.1 devices. 11. DVI-D port. This port is for any DVI-D compatible device. DVI-D can't be converted to output RGB Signal to CRT and is not compatible with DVI-I. 12. HDMI port. This port is for a High-Definition Multimedia Interface (HDMI) connector, and is HDCP compliant allowing playback of HD DVD, Blu-ray, and other protected content. Intel display architecture design supports the following maximum supported pixel clocks (Pixel Clock = H total x V Total x Frame Rate (Screen refresh rate)): - DisplayPort port: 553 MHz - HDMI port: 300 MHz - DVI port: 165 MHz - VGA port: 180 MHz 13. PS/2 keyboard port (purple). This port is for a PS/2 keyboard. 1.7.2 Internal connectors 1. Serial port connector (10-1 pin COM) This connector is for a serial (COM) port. Connect the serial port module cable to this connector, then install the module to a slot opening at the back of the system chassis. COM1 COM2 RXD DTR DSR CTS RXD DTR DSR CTS PIN 1 PIN 1 DCD TXD GND RTS RI DCD TXD GND RTS RI Q87M-E Q87M-E Serial port(COM) connectors The COM module is purchased separately. ASUS Q87M-E 1-13