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Dual M.2 NVMe SSD Host Adapter with PCIe Bifurcation Function
- Add 2 x M.2 NVMe SSD (M-Key) onto a single PCIe X4 host adapter, so you can access 2 x M.2 NVMe SSD at the same time
- Support soft RAID in Windows/Linux/3rd party software
- Support M.2 NVMe SSD RAID-on-CPU (VROC) in the Intel Platform, but you need to purchase an Intel VROC license by yourself
- Support M.2 NVMe RAID in AMD Platform
- Support Mac Pro 5.1
- PCIe 3.0 X4 bandwidth
- For PCIe 4.0 SSD, it will downgrade to PCIe 3.0 mode
- Support PCIe bifurcation function
- Support 2230/2242/2260/2280/22110 form factor
- The gap between the two NVMe slots is 3mm
- Regular profile bracket and low profile bracket
PCIe Bifurcation (PCIe Splitter)
- With ASM2821 PCIe Bifurcation function, PA20 can work with none PCIe Bifurcation motherboard;
- The disadvantage is that PA20 cannot support PCIe 4.0 and only support PCIe 3.0/2.0 features;
- The max bandwidth is PCIe 3.0 X4, which means 2 x M.2 NVMe SSD share PCIe 3.0 X4 bandwidth.
Soft RAID in Window 10
- When you find 2 separate M.2 NVMe SSD in Disk Management of Windows 10
- Right click the disk volume, which you want to setup soft RAID
- A pop-up window appears, click the option (Spanned/Striped/Mirrored)
- Noted: You can setup soft RAID in Linux/Mac/3rd party software also.
PCIE 3.0 X4 Full Speed
- Compatible with PCIe 3.0/2.0 motherboards, and install into PCI-Express X4 lane.
- To reach PCIe 3.0 speed, make sure your CPU and motherboard and PCIe SSDs are all PCIe 3.0 enabled.
M.2 SSDs Installation
- M.2 SSD head tilted at 30 degree angle, inserted into Key M interface
- The brass standoff snaps into the semi-circular position at the end of the M.2 SSD
- Secure the brass standoff from the back with screw
Packaging includes
- PA20
- 2 x M.2 Screw and Copper Stand
- 8cm Low-profile bracket
- Screws for bracket mounting to PC
- Screwdriver
Victor
Reviewed in Sweden on February 8, 2025
Allows you to use 2x NVMe drives in a computer that does not have native support for PCIe Bifurcation.
I. Sterling
Reviewed in the United States on April 14, 2025
Works out of the box with TrueNAS, which is what I needed it for. Would recommend.
User123
Reviewed in the United States on September 2, 2024
Very Good
Robert Lincoln
Reviewed in the United States on July 29, 2024
Tried two of these boards and neither worked. The PCIe bridge doesn't appear in the hardware report and the downstream devices, of course, do not show up. This board is based on an ASM2821 PCIe bridge, which has a x4 root port and is configured for two x4 PCIe downstream ports for the SSDs. I ended up getting a Startech PEX8m2E2 card. That card uses an ASM2824 which has a x8 root port and is configured for two x4 downstream ports. The Sonnet expansion chassis has a x8 connector but only drives a x4 PCIe bus, which I figured this switch should support. It did and I am a happy camper, though I did have to spend more money for the Startech board. The Glotrends original board should have worked but my guess is Glotrends didn't test this thoroughly for compatibility. I see no reason why it shouldn't have worked with the ASM2821.
Bru Huf
Reviewed in the United States on July 18, 2024
I used 2 4tb NMVE m.2 sticks. Used their mounting screws, inserted in PCI slot, re-started, and desktop immediately detected. I had them in an unallocated state. Formatted, then made part of a five stick Windows pool storage. Very satisfied. Highly recommended.
Travis Mick
Reviewed in the United States on June 1, 2024
I got two of these boards so I could fit an additional four M.2 drives in some empty x4 slots on my new build. My goal was to achieve 12 TB of usable capacity in RAID10 and the only way to do so was to use 6x4TB drives, which severely limited my options for SSDs.I initially tried installing Teamgroup MP34 4TB drives in these. The UEFI was able to detect the drives, but upon boot they were unable to initialize. I tried installing a random Intel P4511 in the card, and it was recognized in the OS, so initially thought it was an issue with the drives.I replaced the drives with Crucial P3 4TB. These were also recognized by the OS and I was able to set up my storage pool with them, however I found that under even light load, the switches would report uncorrectable AER faults and ops against the NVMe behind them would time out. This severely impacted system performance and basically rendered the machine unusable.I have since replaced these cards with some based on a PLX switch, and it works as expected.
GateWarrior2000
Reviewed in the United States on February 18, 2024
Installed in a Dell XPS 8950 running Windows 11 Pro with no issues. Installed two Samsung EVO 970 2TB M.2s on the PA20 and the system immedately identified both drives and was able to span the drives into 4TB. No tech support needed, good old plug and play.
PSG
Reviewed in Canada on November 4, 2024
This card worked perfectly. It allowed me to add 2 X 2TB NVME 2280 SSD drives to my older Thinkstation P710 Dual Zeon Workstation. I just installed the drives on the card and plugged it in and it immediately identified them as 2 new drives.
Michael Engelen
Reviewed in Germany on November 28, 2024
Bei mir ist die Karte mit zwei M.2-NVME-Riegeln mit jeweils 4TB bestückt und mehr als 3-mal so schnell wie eine externe USB 3.2 2x2 Lösung bzw. sogar 7-mal so schnell wie die Anbindung mit einem passenden Gehäuse über einen externen USB 3.1-Port. Beeindruckend! Der Einbau ist wirklich einfach (man muss halt einen passenden PCIe 3.0 x4- Slot finden (bei mir auf einem MSI Z690 Tomahawk-Board)) und schon ist es Plug-and-Play.
Mr. Fox
Reviewed in the United States on January 8, 2024
Easy way to add two NVMe SSDs using a X4 PCIe slot. I have two. Both work perfectly and the drives function at expected speeds. I had one (exactly same brand, even shipped in the same box,) that I purchased on eBay that was defective, but the other two have been reliable. Whether you are adding NVMe to a system without it or added additional NVMe drives, I recommend it.
RE View S.p.A.
Reviewed in Italy on April 21, 2024
La scheda si presenta subito di ottima fattura costruttiva, con package ben curato e poche ma semplici operazioni descritte su un foglietto (dato che è realmente plug & play). Dotata di slot PCIe 3.0 X4 con funzione di biforcazione PCIe, la scheda FUNZIONA PERFETTAMENTE ANCHE SU MAC PRO 5.1 senza nessun problema, ma con i limiti di velocità dovuti al PCIe 2.0 del Mac ovviamente. Quindi la descrizione sul sito è palesemente errata. Inoltre ho tranquillamente effettuato un boot da NVME con sistema OS X Mojave senza alcun problema (marcando il disco di avvio da preferenze di sistema), oltre ad aver creato un volume RAID Stripe con Utility Disco, che può anche essere avviabile (clonando il sistema operativo su di esso, dato che OS X Mojave non permette di essere installato su un volume RAID generico). La spedizione con PRIME è stata eccezzionale (una volta tanto) dato che mi è arrivata addirittura un giorno prima del previsto, in più il prodotto ha un rapporto prezzo qualità senza eguali (unico limite è il PCIe 3.0 a soli 4X che ne rallenta le prestazioni delle unità SSD collegate, comunque ben oltre i 2000 MB/s sia per la lettura che per la scrittura (ho usato due Samsung 970 EVO Plus da 1 TB ciascuno per il test). Dunque un acquisto veramente molto conveniente su Mac Pro 5.1 (con ROM 144.0.0.0 o superiore) o anche per sistemi PC non proprio di ultima generazione (personalmente l'ho provata su un HP Omen con i7-9700K senza nessun problema). Prodotto consigliatissimo.
LENENN
Reviewed in France on August 25, 2023
Mis avec deux SSD NVMe et l'un des deux ne fonctionne plus
G Kelly
Reviewed in the United States on July 18, 2022
I bought the Asus quad m.2 pcie adapter card like many people and could only get it to work on 1st pcie slot which is garbage!!!! The Asus card is for servers and motherboards with lots of pcie lanes like Threadripper,This card works no problem but at 3.0 speed. WOrtk it. I had to but this from Canada because the nearest similar card is double the price...
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