Velleman VMBRSUSB - Manual (Page 5)

Velbus manual VMBRSUSB – edition 1
5
Remark: You can also install the serial connection elsewhere (e.g. on the side of the fuse box).
Use a 9-pole female Sub-D connector (Velleman ref. CC005).
CONNECTION WITH THE COMPUTER
Remove the cover from the module.
Connection through serial port
Connect the module to the COM port of the computer using a serial cable (Velleman ref. CW014).