Mellanox MCX311A-XCAT 10 Gigabit Ethernet PCIe Adapter Card ConnectX-3 CX311A $12 obo + $15 Shipping

Discussion in 'Great Deals' started by zeynel, Nov 27, 2017.

  1. aero

    aero Active Member

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    Take a look on eBay for Solarflare brand cards, they're very good. SFN5122f for instance.
     
    #101
  2. Jannis Jacobsen

    Jannis Jacobsen Active Member

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    Are they only low profile?

    -J
     
    #102
  3. aero

    aero Active Member

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    When purchased new they come with both the full height and low profile brackets. So you should be able to find either.
     
    #103
  4. i386

    i386 Well-Known Member

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    @aero
    Most of the mellanox cards sold on ebay are oem cards, pulled from servers (that don't need nics that fast or that were upgrade to 40+ gbe). They don't come with both brackets :(
     
    #104
  5. woodshop2300

    woodshop2300 New Member

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    Since the ConnectX-2 brackets work this probably would as well.
    Mellanox ConnectX2 Full Height Slot Cover by lowfat
    I’m still waiting on my printer from GearBest to show up in the country let alone my house. So it will be some time yet before I can try.
     
    #105
  6. mixmansc

    mixmansc Member

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    I can confirm 100% that this bracket #MTM003170

    Mellanox MTM003170 FRU Tall Bracket for 1-port SFP+ adapter. Fits MNPA19

    works perfectly fine with the ConnectX-3 MCX311A-XCAT. As I mentioned on the last page, it is NOT a fully perforated bracket but it fits and the card plugs into a slot properly, etc. Also I can confirm that the screws from the SFF bracket also fit the full size brackets. These are cheaper and in stock. Again from the previous page, this bracket is intended for the ConnectX-2 MNPA19 cards but it works perfect on the ConnectX-3 card just as well. I bought 8 of them directly from Mellanox and they came in this morning and I tested to make sure they fit the ConnectX-3 cards I bought.

    These are for the single SFP+ port cards ONLY. They will not work for a dual port card or a card with some other type of port. Also as you can see in this picture, the bracket for the older card has two holes for LED's while the newer card only has a single LED and that single LED does not line up exactly with the hole in the bracket. It is however close enough to the holes that you can still see the activity LED from the back of the machine well enough. In this picture you can see the tiny LED just to the right of the hole in the bracket. Mellanox shows this bracket as in stock, ships the same day and is $4.30 each. On my order of 8 the shipping was another $12....

    IMG_1854.jpg
     
    #106
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  7. saivert

    saivert Member

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    Since you guys are struggling so much to get proper brackets I take it the card itself is good?
    Should be way easier to configure SR-IOV on this. I'm still on the fence about buying one as I have other items on the shopping list too.
    My main issue is heat as I mentioned previously. Needing active cooling on the ConnectX-2 for it not to hang my system is not ideal. The tiny fan I use now is not inaudible even with a resistor to lower the voltage. Cheap chinese fan that rattle and wear out fast.
     
    #107
  8. craneopbru

    craneopbru New Member

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    The benefit of going with that card is the availability of Mac drivers. Although the one that i just ordered is showing absolutely abysmal transfer speeds in a Mac Pro - about 2 Gb/s. I also find that it's somewhat picky about transceivers; it refuses to recognize any of my FibreStore transceivers.
     
    #108
  9. vkfu

    vkfu New Member

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    #109
    Last edited: Jan 30, 2018
  10. Antonio

    Antonio Member

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    I received my order for the 4898's and they work fine
     
    #110
  11. mtekk

    mtekk New Member

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    For those who ordered the MTM007160 (which doesn't fit) from Mellanox, check your inboxes. Apparently, Mellanox is offering exchanges for the MTM007160 replacing with the MTM004898 (the non-perforated one that does fit).
     
    #111
  12. homelabusr

    homelabusr Member

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    Doesn't fit.
    Got an email from mellanox saying they can initiate a return and replace with the non-perforated one.

     
    #112
  13. shanester

    shanester New Member

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    Can someone recommend an inexpensive compatible RJ45 Copper Transceiver for this card?
     
    #113
  14. Schoondoggy

    Schoondoggy Member

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    All of the 10GbE RJ45 SFP+ transceivers I find are around $50, obviously not inexpensive. Has anyone found a consistent source cheaper?
     
    #114
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