I know everyone is usually after 10GbE, 40GbE, and even 100GbE, but sometimes 1GbE will do. Figured since shipping alone on an item like this is probably $15-20, it's a decent deal if you want/need the cheapest switch you can get. I have no experience with any Supermicro networking gear myself, so can't really speak as to the quality unfortunately.
SuperMicro SSE-G2252 Managed GE Switch (SSG522N02800514) | 48 Gige + 4 SFP Ports | eBay
SuperMicro SSE-G2252 Managed GE Switch (SSG522N02800514) | 48 Gige + 4 SFP Ports | eBay