It was for me. You'll need a console cable of course, but yes, it's just linux so resetting the root password isn't hard.
My question is, can I use hp infiniband qsfp+ cards with this? E.g.:
HP 656089-001 Infiniband 10/40GB DP NIC 649281-B21 661685-001 Low Profile 4872503154148 | eBay