Question 1

Does it support trim?

Accepted Answer

No. TRIM is not possible over USB, even with UASP. You need at least an eSATA or Thunderbolt interface on the device (and I haven't tried yet to get TRIM to work with those, either). There's lots of stuff on this out there. Search for "trim on usb", for example.However (and this is important), makers of SSD storage intended for use as USB-connected external storage have been using very good garbage collection (GC) in the storage controller (and extra user-inaccessible storage on the device). While there's debate as to whether GC is as good as TRIM, these devices do a very nice job of keeping write performance at high levels as the drive fills up. I have a 256GB USB 3.0 SSD from Freecom that's so fast I still haven't figured out how they do it. But get your Amex card out for that one: $300 and up when you can find it.

Question 2

Maybe I missed it, but what are the dimensions? & weight (non-shipping)?

Accepted Answer

It's small. Not sure exactly, but approx. 3 1/2 long , 2 wide and 1/2 " deep. I'm not good at estimating, weight but it's only 1 or 2 oz.

Question 3

Is it usable like a flash drive?  Will be transporting music back and forth between computers.

Accepted Answer

Better than an ordinary USB flash drive. I use mine to image computers and it's very fast. Best portable drive I have owned. If you use multiple operating systems Mac, Windows, etc you can partition the disk into separate volumes/drives. Great device!

Question 4

Anyone else getting only 223GB after formating the 256?

Accepted Answer

As most of us who've been around a while know, computers count differently, with "1K" actually being 1,024 bytes, 1 MB actually being 1,048,576 bytes, and 1GB actually being 1,073,741,824 bytes. I THOUGHT that would explain the difference, and was about to make a long post explaining binary mathematics UNTIL I got to the end and divided 1073741824 into 256,000,000,000 and discovered that it came to 238.4185791015625. Well, THAT'S certainly NOT what Spinnukur OR Alandelon is getting! Sooo, I multiplied 1,073,741,824 by 223 and here's what I came up with... 239,444,426,752. That is SOOOOO close to 240 "GB" the difference isn't worth mentioning. In fact, I'd venture to say that if you did a Windows "Properties" on the disk (or whatever the equivalent is these days on the Mac), you'd see that the 223 is actually 223.SOMETHING and that the actual BYTES on the disk is somewhere JUST OVER 240,000,000,000.IF SO that is QUITE disconcerting, since in addition to SSDs made in binary multiples of 32, 64, 128, 256, 512 and 1,024GB, there have ALSO been some manufactured on a DIFFERENT size platform (including some of the BEST early drives from Intel, like the M25 80 GB drive I put as the boot drive in the system I built in 2009 -- cost more than a good 512 drive does today -- WELL more). Many of THOSE drives have been built at 40 GB, 80 GB, 120 GB, 240 GB, 480 GB and 960 GB. If you do a bit of shopping around here on Amazon or other places online, you'll see a great many drives vary from either the BINARY standard or THIS standard. IF a drive that was developed under THIS standard and was made at 240 GB IS being sold as a 256 GB drive, I don't care HOW computers count bytes, it's FRAUD and buyers are being cheated out of 16 GIGABYTES OF SPACE!!! If it was a smaller discrepancy of just a few hundred MB, I'd say maybe it was "system resources" used by the drive and allocated for the FAT and other purposes during formatting. But 16 GB out of 256?!?!? No way in HELL!!! And the fact that at least TWO members have reported this??? This needs to be explained, and people need to be compensated in some manner if I'm correct.IF this IS fraud, this could bring down this company and even put people IN JAIL (I don't mean Amazon; I mean the company that's selling the drive through Amazon, as there's NO WAY they could NOT know this).Caveat Emptor, let the buyer beware. I was actually reading all the questions to see if MINE had been posted. It had not. Mine was about MAJOR discrepancies in drive speed between the 256 GB version and all the others. The 256 GB version shows MUCH faster speeds on than even the 512 GB version. That's unusual, and I was wondering about that. NOW I'm wondering about MUCH MORE. AND THIS is why I often do MUCH research before I buy anything new with which I'm unfamiliar -- even from my most-trusted Amazon.com!Jeff

Hard Drive	256 GB Solid State Drive
Brand	MyDigitalSSD
Series	OTG V2
Item model number	MDMS-OTG-256
Hardware Platform	PC, Mac
Operating System	USB 3.1 (Gen 1) UASP mode: Windows 8/8.1/10, Mac OS X 10.8 or newer USB 3.0 support: Windows XP/Vista/7/8/8.1/10, Mac OS X 10.8 USB 2.0 support: Windows 2000 and above, Mac OS 10.x, Linux
Item Weight	4.8 ounces
Product Dimensions	3.43 x 1.89 x 0.39 inches
Item Dimensions LxWxH	3.43 x 1.89 x 0.39 inches
Flash Memory Size	256 GB
Hard Drive Interface	SCSI
Manufacturer	MyDigitalSSD
ASIN	B00EZ2FRP2
Is Discontinued By Manufacturer	Yes
Date First Available	September 4, 2013

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MyDigitalSSD 256GB OTG (On The Go) mSATA Based SuperSpeed USB 3.0 UASP Portable External Solid State Storage Drive SSD (256GB)

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