GIGABYTE GA-K8NS ULTRA-939 - Manual (Page 19)

Hardware Installation Process
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Step 4: Install I/O Peripherals Cables
Step 4-1: I/O Back Panel Introduction
This connector supports 2 standard COM ports
and 1 Parallel port. Devices like printer can be
connected to Parallel port; mouse and modem
etc. can be connected to Serial ports.
This connector supports standard PS/2
keyboard and PS/2 mouse.
PS/2 Mouse Connector
(6 pin Female)
PS/2 Keyboard Connector
(6 pin Female)
Parallel Port (25 pin Female)
COMA COMB
Serial Port (9 pin Male)
PS/2 Keyboard and PS/2 Mouse Connector
Parallel Port, Serial Ports (COMA / COMB)