Detail overview
  dell 210-acrk Networking S4810-on 48x 10g Sfp+ 4x 40g Qsfp Onie Switch With Rack Mount Kit (no Power Supplies) 
 Key Features : 
  48 X 10 Gigabit Ethernet Sfp+ Ports 
   4 X 40 Gigabit Ethernet Qsfp+ Up-link Ports 
   Rj45 Console/management Port With Rs232 Signalling 
   1 X Hot-swap Power Supply (does Not Include) 
   2 X Fans 
   1x Rack Mount Kit 
   1x Console Cable