Deditec USB WATCHDOG STICK, Hardware Description, Page: 15 / 62

Hardware description | Seite 15
2.5.1.2.2. Connection direct to power supply
At some PC systems, like e.g. Dell, the pin assignment and the form factor of the
power supply plug diverges from the ATX-/BTX- form factor. At this systems you
have to cut trough the "PS_ON'" Cable by yourself and connect it with the 2. relay
(opener-relais) of the Watchdog-Stick.
Approach:
1. Disconnect the main power plug of your power supply .
2. Install the D-SUB-Slot-Card in the PC.
3. Connect the Watchdog-Stick (USB side) with the USB-Slot.
4. Connect the Watchdog-Stick (D-SUB side) with the D-SUB-Slot-Card (A).
5. Disconnect the power supply plug (rectangular 20//24 pol. plug) from the
mainboard. Cut trough and strip the "PS_ON'#" wire of the power supply wire
harness (for pin assignment -> see power supply manual). Connect the both lateral
protruded wires with the 2. relay of the D-SUB-Slot-Card (B). Regard, the correct
connection and the labels of the relays respectively, because the 1. relay is a
closer relay and the 2. relay is an opener relay.