StarTech.com 10 ft Cross Wired DB9 to DB25 Serial Null Modem Cable - F/M - Null modem cable - DB-9 (F) to DB-25 (M) - 10 ft - SCNM925FM 11.71$
StarTech.com 10' RS232 Serial Null Modem Cable - Null modem cable - DB-9 (F) to DB-9 (F) - 10 ft - SCNM9FF Gray 3.49$
StarTech.com 10 ft DB9 RS232 Serial Null Modem Cable F/M - Null modem cable - DB-9 (M) to DB-9 (F) - 10 ft - SCNM9FM 11.99$
StarTech.com 2m Black DB9 RS232 Serial Null Modem Cable F/F - DB9 Female to Female - 9 pin RS232 Null Modem Cable - 2 meter, Black (SCNM9FF2MBK) 2.99$