Serial cable, 9-pin extension cable (socket - plug)
K01C VGA To Cable 32 10/12ft 15 Pin D Sub Plug Monitor PC Laptop Projector | eBay
dB9 Printer Kabel COM Serial Cable RS232 Wire to B Male Data Line 9pin D Sub Cable - China dB9 Printer Kabel, COM Serial Cable RS232 Wire | Made-in-China.com
CSMUZ15MF-2.5 - L-com - Computer Cable, D Sub 15 Position Plug, D Sub 15 Position Receptacle