DB9 to Terminal Block 5 Pin Passive Adapter - Coolgear
DE-9 (DB-9) Female Socket to Terminal Spring Block Adapter : ID 4510 : $6.25 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: DB9 Breakout Board DB9 RS232 Serial Male to Terminal Block 10P Adapter 5 Pack : Industrial & Scientific
StarTech.com DB92422 RS422 RS485 Serial DB9 to Terminal Block Adapter - Walmart.com
DB9 to Terminal Block 5 Pin Passive Adapter
D-sub DB9 Breakout Board Connector 9 Pin 2 Row Male RS232 Serial Port Solderless Terminal Block Adapter with Positioning Nuts - Newegg.com
RS232 to RS422/RS485 Converter Adapter | TRENDnet - TRENDnet TI-S100
RS422 RS485 Serial DB9 Male Connector to Terminal Block Adapter
Amazon.com: BUELEC DB9 Female and Male Connector in One Breakout Board,RS232/RS485/CAN/RS422 with DB9 Connector to Terminal Board Signal Module(2pcsDB9 Female/Male) : Electronics
StarTech RS422 RS485 Serial DB9 to Terminal Block Adapter
Adapter serial connection DB9-male to 4-pin terminal block Breakout Board - Cablematic
dB9f-to-Tb Moxa dB9 Female to Terminal Block - China Moxa dB9 Female to Terminal Block, Mini dB9f-to-Tb Female dB9 to Terminal Bloc | Made-in-China.com