- Chipset: B550
- Socket: AM4
- Memory: 4x DDR4 DIMM Slots (Max 128GB, 4733+ OC)
- Expansion Slots: PCIe 4.0 x16, PCIe 3.0 x16, PCIe 3.0 x1, M.2 Key E (WiFi)
- Storage: 6x SATA3, Hyper M.2 (PCIe Gen4 x4), M.2 (PCIe Gen3 x2 & SATA3)
- Inputs/Outputs: 8x USB 3.2 Gen1, 2x USB 3.2 Gen2 (Type-A+C), DisplayPort, D-Sub, HDMI
- Realtek RTL8111H Gigabit LAN
- Realtek ALC1200 Audio
- AMD Quad CrossFireX
- Form Factor: Micro-ATX
- 3 Years Limited Warranty
ASRock B550M Pro4 AMD AM4 Matx Motherboard $139 + Delivery @ Shopping Express
![](https://files.ozbargain.com.au/u/67/108767-38.jpg?h=d05db293)
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M2_2 and SATA3_5_6 share lanes. If either one of them is in use, the other one will be disabled.
So if you have 2 m.2 to use, you will then only have 3 sata ports left for hdd, ssd
4 sata ports i think, 0-4 and 5-6 are the shared ones.
Yes that's correct.
And that's normal anyway. There's only so many pcie lanes they can use.
Isnt 3,5,6, the shared ones?
Or are they just saying that 5,6 ports for Sata 3 is shared?
Only if you use m.2/SATA3 SSD. Question is, how likely is that going to be?
With m.2/NVMe SSD not so expensive and you get more bandwidth with NVMe, most people won't go for m.2/SATA.
The point is even if you put an nvme drive in the m2_2 you lose two SATA ports.
Again not a huge concern and it's like that on most boards but worth mentioning.
Certainly worth pointing out as it's not always obvious using one listed feature disables another, and it varies between boards. The B550M Mortar, for example, will let you use both M.2s and all six SATA ports, but at the cost of its PCI-E x4 slot. Wasn't a thing in the old days and I had to tread carefully when considering B550 options to make sure these sorts of 'preclusions' wouldn't impact me too significantly.
EDIT: Meant to reply
They are also offering an extra 10% off when you buy it with a CPU so I got this motherboard for around $125 since I bought a 3600 with it. Worth mentioning if you need a CPU as well.
is description correct?
website states
M.2 Sockets:1they have 2.
one in the middle with heatsink, the other one on the right hand side bottom.
Okay for 3600x, but not beyond a stock 3900x