Clips DIN rail for mounting for 2-port and 4-port USB serial adapters and all USB digital I/O products. Clips DIN rail for mounting for 2-port and 4-port USB serial adapters and all USB digital I/O products. The plastic clip securely mounts products to all common 35mm DIN rail profiles, and is compatible with Series A mounting rails. For convenient installation and service, the DR102 places devices near industrial control equipment on the DIN rail.