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The Mystery of the XE2 SFF PSU
One of the upgrades I performed on my 3020 SFF was the VX372 power supply from the XE2 SFF variant of these machines. 315W @ 4.4A, compared to 255W @ 4.6A for stock. Fit perfectly, and runs cooler under the same load. Mission accomplished. There's been much talk here about the comparatively low output of the stock PSU, but the factory option Radeon R7 250, pulling 75W, ran very comfortably. And the newer cards that more than double performance (Radeon Pro WX 2100, and all the GeForce GT1030's out there) are doing so at half the wattage required.
There remains a mystery with this power supply- an additional six wire connector. ALL the low profile graphics cards I've seen are rail powered and don't need additional power. So what is this for? On a service call long ago, I remember seeing a *powered* PCIe card residing in the x4 slot, looking much like the image below, connected to that cable. No exterior port that I can remember. *Not* a wireless or USB card. Who knows what this is or what it's for? (Dell folk can chime in.)
speedstep
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February 2nd, 2021 17:00
CONNECTORSsix wire connector is a PCI-E power connection for up to 150W GPU LIKE A GTX 1060
redxps630
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February 2nd, 2021 17:00
that add in card in your Dell pic looks like the 3 PORT 12V POWERED USB PCIE ADD-IN CARD for SFF
which is described as a factory installed optional card in Dell tech guide for XE2.
p.24/42
https://i.dell.com/sites/csdocuments/Shared-Content_data-Sheets_Documents/ar/dz/CSG-EN-XX-ALL-OptiPlex-XE2-Technical-Guidebook.pdf
https://www.newegg.com/sunix-model-pub0300xl-pci-express-to-usb-card/p/N82E16815114011
(edited)
WmGFuchs28
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February 3rd, 2021 14:00
Nice! And thank you. I am familiar with those powered USB ports from working on Point Of Sale (POS) systems. What I *could* use is a 2 port USB 3.0 card...with that PCIe connector, maybe... Who has something they like?
bradthetechnut
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February 3rd, 2021 18:00
Also, if you'd rather have USB 3.0 ports that are easier to access: https://www.amazon.com/s?k=usb+3.0+hub&ref=nb_sb_noss
bradthetechnut
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February 3rd, 2021 18:00
Is this what you're looking for? https://www.amazon.com/FebSmart-Self-Powered-Technology-No-Additional-FS-U2-Pro/dp/B071P5C6CS/ref=mp_s_a_1_1_sspa?dchild=1&keywords=usb+3.0+pci-e+card+low+profile&qid=1612405507&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFaQVg4UE9VVE5VRUEmZW5jcnlwdGVkSWQ9QTAzOTYyMjAzNUVMRzZFUDZMVVdXJmVuY3J5cHRlZEFkSWQ9QTA5MjI1NTUxQkxVWVIwRU04Vk5GJndpZGdldE5hbWU9c3BfcGhvbmVfc2VhcmNoX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=