I work for a hosting company, where we offer colocation services.
Since we offer colocation for client hardware which we don't own, a lot of the client devices don't have an IPMI module to allow for a remote reboot. As a result, when one of these machines crashes, we get a call to reboot it, which we do by physically accessing the power button.
This is inconvenient, obviously, especially outside of business hours, when we don't have anyone on-site and have to come into the office to reboot a computer. I know that on servers from OEMs like HP and Dell and IBM, you get an out-of-band-management interface which provides essentially the same functionality as physical access would.
Is this kind of hardware available independent of the an OEM-specific model? I'm thinking of something like a PCI card (for example) that I could plug into any brand of computer to give me IPMI or remote power-cycling functionality, but that's just off the top of my head.
What hardware is typically used to do this?