

🚀 Unlock the future of portable bootable storage with ironclad security!
The IODD ST400 is a cutting-edge 2.5-inch USB-C enclosure that supports bootable virtual optical and hard drives with AES256-XTS encryption up to 76 digits. Designed for professionals demanding secure, fast, and versatile storage, it offers universal OS boot compatibility, write protection, and smart power-saving features—all engineered in Korea for premium quality.












| Brand | IODD |
| Product Dimensions | 13.49 x 8 x 1.5 cm; 150 g |
| Item model number | IODD ST400 |
| Manufacturer | IODD |
| Series | ST400 |
| Colour | Black |
| Form Factor | 2.5-inch |
| Hard Drive Size | 2 TB |
| Hard Disk Description | Mechanical Hard Disk |
| Hard Drive Interface | USB-C |
| Hardware Platform | Windows |
| Operating System | Android, Linux, Mac OS X, Windows |
| Are Batteries Included | No |
| Item Weight | 150 g |
| Guaranteed software updates until | unknown |
A**N
Decent piece of kit
A Fab piece of kit, allowing the use of Iso files to be added as a virtual cd rom drive makes my life as a Technician a dream. Put my own 1TB SSD in it and the USB 3.0 has a decent transfer speed.
A**R
Fantastic Product
This has to the second best product I have used the 1st was my other iODD device which had broken from being used so much. This is such a great idea and much better I can use an SSD now not the M2 I had to but to upgrade my older model. It is really good value for money and the so easy to use and great performance. If you have a fast SSD then the speed is better but I think even a slower SSD would still be better than a load of USB drives
B**E
You gotta get an IODD!
Almost any pro IT guy - and most vaguely geeky hobbyists - who's had a chance to play with one of my IODD drives, ends up buying one :D They're all good - the older 2.5" ones became a staple of my toolkit, previously resold in EU under Zalman branding, and they've just got better since - going from USB 2 to USB 3, adding a full keypad and screen for better UI, more compact options (the IODD mini) and then this, bringing the newer interface to 2.5", along with - praise be! - a USB C port! The build quality is pretty nice too, a step up from before - I really like the clicky button feel on the keypad and it feels nice and solid in general. This is now my primary workshop IODD with an IODD mini in the go-bag :) Yes, you can use Ventoy. But this is like ventoy in hardware :) It works - nearly everywhere, nearly every time. It identifies as the emulated device down to the BIOS level, works with fussy servers, and makes it pretty much impossible to pick the wrong drive or accidentally overwrite your USB key during an install. I use a range of USB thumb drive images for various purposes - some copied from actual keys I had floating around or loaned. And USB HDD images to keep a Windows2Go install handy at all times (and a Debian install as well!). And of course, a full library of ISOs, from proliant service packs to windows 10/11/server to truenas to proxmox to pfsense to firmware update discs for SSDs and diagnostic toolkit discs. Get one :) And this particular one is a good choice, if you don't need it to be tiny - check the IODD mini for that! Give it a nice big SSD and load it all up!
Q**R
A better design than the awkward to use old metal-cased step-wheel model.
Fitting my 1TB 2.5" SSD was easy, the button grid made it much easier to use, It's probably faster, and has a much neater USB-C connector, which also allows use with a USB-C to USB-C lead, e.g. useful for direct use with a mobile, to transfer stuff when a booted PC is not handy. My contained 1TB SSD was formatted as NTFS, NOT ExFAT(!), contains many isos, Linux and Windows installers, docs, an ODS partition planning spreadsheet, and most of the PortableApps apps. This is far superior to Ventoy on a USB stick, because unlike Ventoy, you have optional direct HD partition access, and 2.5" SSDs are far faster and more reliable the USB sticks, e.g. an 256GB intenso one I have seemed to be fine, but flaky sometime, but more iffy than I had thought, because it over-heated/throttled a lot during several minute mass-transfer, even hanging Linux, and stalling boot after hard-reset, and ExFAT corruption can't be reliably spotted/fixed on Linux! On Linux, never use ntfsfix for NTFS, it's worse than useless, instead use Windows chkdsk, or find and try the Paragon NTFS utilities.
P**R
Great IT tool
Brilliant tool for IT pro use , domestic users will be lost
A**R
Amazing device!
So useful for mounting ISO files, secure and encrypted. Works well in items where even Ventoy does not work.
M**D
Great external drive case
Really nice unit.. Only issue is that you can't put larger drives in it (12mm plus) so you're limited to ssd's or 2tb hard drives.
M**R
Works great but feels cheap
I have owned all the Zalman\Iodd drives except the mini. this is definitely the best one for functions but also the cheapest build quality, has annoyingly loud click when you use the buttons but overall I am happy with it.
A**O
Excelente, muy util para almacenar todos mis isos de sistemas operativos y para crear volumenes virtuales.
F**Y
très bien
Z**N
Excellent
H**M
Manualen är inget vidare men ge den en stund sen är den fantastisk. Varför släpa på en massa USB minnen när den här kan ersätta dem alla. Den dyker upp som en disk på datorn, som en CD/DVD/BR spelare och som upp till 3 USB/HD enheter, CD/DVD/BR pekar mot en ISO fil, på disken, USB/HD pekar mot viruella hårddiskar, de går att skrivskydda efter behov och avmontera och montera andra helt efter behov.
B**C
Handy to use as an external drive and also as bootable media for your rescue disks. Load in a 2.5inch ssd and enjoy booting speeds much faster than optical drives. The ability to quickly change the loaded iso is easy and works extremely well. the keypad has a solid feel with sure button presses. I always carry it when out on jobs and it has saved so much lost down time by how useful it is by having everything I need available on the one device.
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