250W Power Supply For Dell Poweredge R210 C627N D221N 6HTWP V38RM

so hi Internet basically this is a quick tutorial quick video if anyone finds it in useful out there basically a friend of mine just bought the para reg Dell PowerEdge 620 T 620 and this has been driving me insane for the past 45 minutes I can't believe I am a IT professional and I haven't managed to do this before so basically as the title suggests how do you boot this sucker from usb and I'm used to Dell no sorry I'm just Oh HP ProLiant and straight up the back f11 ff12 escape you get the boot options and you can boot straight off USB and I stuck it I stuck this USB key in the back I stuck it in the front I've had it everywhere I actually I've actually put it inside at the moment because that was my last train of thought if I'll just quickly get some focus on that so there's my USB stick on the inside and the internal a USB I'm actually going to reinstall ESX onto this USB stick so ju