M.2 (M+B) Key to 4 RS-232 DB-9 Serial Ports and 1 DB-25 Para...
M.2( M+B Key) to 4 Ports RS232 Card，IO-M2F384-4S
M.2(B+M Key) to 8 Port RS232 Card,IO-M2F358C-8S
MINI PCIe to 8 Ports RS232 Card,IO-MPE358C-8S
Mini PCIe to RS232/422/485 port,IO-mPCE234285
M.2 to 1 Port RS232 and 1 Port RS232/422/485 Serial Controll...
M.2 to 2 Ports DB9 RS232 Serial Controller Card,IO-ADA15069
Mini PCIe to 2 port RS422/485 card,IO-mPCE352A-2S
Mini PCIe serial port Card (2x RS-232),IO-mPCE352-2S
M.2 to 4 Ports DB9 RS232 Serial Controller Card,IO-M2FNNHE-4...
Mini PCIe to 4 port RS422/485 card,IO-MPCE354A-4S
Mini PCIe Serial Port Card (4x RS-232),IO-mPCE354-4S
