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What is the difference between FLR-SFP and SFP+?

For example what is the difference between cards HP 570SFP+ and HP 570FLR-SFP+?

Which one it's better to buy?

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The "FLR" stands for FlexibleLOM Rack... And "LOM" means "LAN-on-motherboard". So the FLR is really a modular motherboard-attached NIC that does not consume a PCIe slot.

Gen8 ProLiant's have one slot. I believe the Gen9's have two slots. So if you want your 10GbE to be in PCIe form-factor, get the HP 570SFP+. If you want it on the "motherboard", use the FLR adapter.

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  • thanks, but what is better to use PCIe form factor, or FLR? – Oleg Vazhnev Sep 29 '14 at 5:10
  • I can't tell you that. That's up to you and what else you need to install inside of these servers. – ewwhite Sep 29 '14 at 5:11
  • Ed, the Gen9 DL360/380 has a non-removable 4 x 1Gbps copper module AND a FlexLOM port – Chopper3 Sep 29 '14 at 13:48
  • @Chopper3 Good. I couldn't tell from the photos... I'm surprised they're finding room inside the servers for all of this. – ewwhite Sep 29 '14 at 13:49

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