CONCLUSION

   The ICY BOX IB-3640SU3 looks a lot better than most enclosures out there, has room for up to four 3.5 drives (something we rarely see) is a lot more sophisticated offering several functions others do not (Sync/Fan Modes/Manual Interface Selection), has both USB 3.0 and eSATA connectivity and it's also quite fast, especially for a enclosure offering just single (JBOD) mode. Now we will certainly also try to get the RAID versions from RaidSonic to see just what the more demanding users out there can expect from 4 drives in RAID 0/1 modes but that aside the performance of the IB-3640SU3 should be more than enough for most people. Also worth mentioning is that the installed 80mm exhaust fan may not be very quiet when spinning at 100% (easily surpassing 45dBA) but if you leave it up to the internal sensors to decide (auto) it hardly ever goes over 50% and thus it's almost inaudible.

   Unfortunately as many of you know RaidSonic products are rarely ever sold overseas and so the ICY BOX IB-3640SU3 (and that entire line) is currently unavailable for sale inside the USA (i can't say if that will change or not). However in the EU it currently retails for around 120Euros a price tag which is almost half of what other competing 4 bay external HDD enclosures cost right now. Of course it lacks the various RAID modes offered by it's two higher-end brothers (and thus their transfer speeds) but still the ICY BOX IB-3640SU3 is a solid device with many useful features and very good performance levels which is why it receives our Golden Award.

PROS

- Build Quality
- 4x3.5" Drive Bays
- USB 3.0 & eSATA Connectivity
- 80mm Exhaust Fan (Auto & Manual Mode)
- Sync Button (Turns On/Off Alongside Your System)
- Performance
- Price 

CONS

- Availability
- Fan Is Quite Loud At 100%