Pros: Backlit display, idiot proof, metal housing

Cons: Connectors were extreemly tight. Maybe they will loosen up, but I felt like I was going to break something trying to get the 4 pin connector off of it.

Overall Review: Rail 2 will show low voltage unless you also connect a peripheral connector, such a sata power or 4 pin molex.

Pros: * Good Quality build * Easily Read Screen * Variety of Connectors *Significant Statistics Produced

Cons: *Scant documentation *Fractured English *Wish it were a tad heavier

Overall Review: A very good product that desperately needs documentation that is more than a few phrases in fractured English. When a device is as niche-driven technically as is this power supply tester, it should have at least a decent introduction as to use. The Rexus PST-3 Digital Power Supply Tester with LCD is a good device for simple and moderate level testing but leaves the novice level PC enthusiast adrift and casting about for instructions as to proper first-step use from friends and the Internet. If you already have a fair-to-good knowledge of power supply testing this will do quite nicely. If you do not, you will join me on the web and in enthusiast forums asking what the heck you should do be doing in order to perform a proper test of a specific PSU. The device has an easily-read LCD screen that allows the presentation of several power parameters based on the type of connection(s) used. Be aware that - besides the motherboard connection itself - one should only use one other connection at a time. This is explained - in rather poor English unfortunately - in the instructions. For example, it makes no mention of the fact that merely seeing the fan move and statistics generate when connecting to a PSU is nowhere near enough to certify that a PSU is functional. What must be done is to connect a device that will produce a power load. This is because a PSU may well power up, but then fail (either completely or intermittently) when a load is present. That's just one issue that is not mentioned. What is present in terms of instructions is not good. As an example - note the already-mentioned poor explanation of the limit of testing one power supply connection (in addition to the motherboard connection) at a time. So, you are good to go if you are familiar with power supply testing but if - like me - you are a novice in the area, expect to have to cast about a bit on the web in order to find out what the heck to do to really make use of the device. Before one answers that anyone buying this should already have knowledge - allow me to disagree. This is a niche-level product that is needed as almost a basic necessity by those "afflicted" with the PC building bug. The lack of including - at the very least - several pages of suggested sample test procedures - is simply not logical and defeats a good portion of the main reason to produce the product in the first place - power supply knowledge.

Pros: Works like a charm - cheap - nice little LCD readout - fast

Cons: no case

Overall Review: You have to plug in the connectors in a certain order for the device to give you a correct reading, otherwise it will incorrectly beep and show the 12v2 is low (LL) and your PG doesn't work. So, 1) plug in the mainboard 20-pin connector on the right side of the tester, with the clip facing up, 2) plug in the P4/P6/P8 connector on the left side of the tester, clip facing up, then, last, 3) plug in the power supply cord via the wall outlet. All the numbers should register, with no beeps, if all is well.

Pros: A quick test of a power supply. I use it on all computers I work on to quickly eliminate the PS as a source of a problem.

Cons: Tests voltage only....no load. I have run into a couple of power supplies that tested OK but failed under load. Had to buy another tester that put the PS under a simulated load.

Overall Review: Works 98% of the time

Pros: + Pocket-sized PSU tester + Gives accurate readings + Able to test any *common* PSU connection used today

Cons: - It's not a multimeter, nor is it as accurate (which should not be expected from one of these) - Can't test more than one device cable at a time (only main cable, 4-pin aux cable, and one additional cable should be plugged in at any given time, according to specifications)

Overall Review: Bought this to keep in my mobile toolkit, as a quick and easy way to test for dead PSU's. This does exactly what I wanted it to. While a paper clip works just as well for testing to see if the PSU is completely dead, this little device will be able to tell you if one of your voltage rails is out of spec, or if one of your device cables has a short or isn't making a connection properly. That being said, it is important to note that it is nowhere near as precise as a multimeter (which I also have in said toolkit), and testers such as these DO NOT PUT ANY LOAD WHATSOEVER on the PSU, so don't expect to be able to tell if those reboots or sudden power-offs are due to insufficient wattage or voltage rail instability by using one of these gadgets. That's what the multimeters are for. All in all, though, I can't argue against any computer tech having one of these. They are quick and handy for determining the most common PSU problems anyone will see, but don't throw out the multimeter.

Pros: Small, tough aluminum body, tight connections, fairly logical layout.

Cons: As others have stated, I believe that this product might be used. It has several scratches on the screen. None that impede the viewability of the screen, but it is scratched, nonetheless. Also, the LCD Screen only lights when you plug in an ATX power adapter- you only get the +12V, +3.3V, and +5V with IDE, SATA, etc. adapters.

Overall Review: Although it's a good product, and is pretty useful, I'm not too sure if I trust Rexus after holding their product in my hand. It came shipped in a pretty bland box, with no company names on the unit itself, the box it came in, or the manual. It does have a part number and serial number on the back of the unit, but it's hard to reference those if you don't know who to call to get it fixed!

Pros: Easily-read display, not merely a black-and-silver LCD image, but black-against-bright blue for clarity. 1-- Precisely cut, solid connectors for all standard cables, never too tight or too loose 2-- Sturdy metal case, slim and pocket-size 3-- Safe working range violation-- beep alarm indicates when voltage falls below a safe/acceptable minimum or exceeds a safe/acceptable maximum specific to a connector (from -+5% to -+8%, depending on connector), which is a tremendous aid to identify an intermittently failing PSU circuit, but without need to stand over the unit tested, meter in hand, waiting for the event. 4-- Abnormal voltage detection-- display indicates when voltage falls below a connector-specific low minimum or exceeds a connector-specific high maximum, and flashes "LL" or "HH" on that abnormal voltage 5-- Display indicates "PowerGood" (PG) status in milliseconds, with alarm if the PG value falls below or exceeds the range of 100 to 900ms Meter is ideal for routine checks of test and reserve/spare PSUs, to prevent damage before connecting valuable equipment and possibly damaging disk data. Without this meter, the only status indication is the wryly-labled "smoke test", which indicates possible equipment damage

Cons: None, with Possible confusion (to new users) on the difference between the alarm for violation of safe working range and a flashing indicator for abnormal voltage. To a new user, the two may seem the same, but 1-- the safe working range violation beep alarm occurs as a failing PSU value briefly enters a damaging range one or more times in a running, real-time test for random events 2-- the abnormal voltage display flashes after any single event, indicating definite damage/malfunction in the PSU

Overall Review: This product reviewed by "Definitely Ambivalent", a purchaser and satisfied user (after one week)

Pros: This is the first power tester I've owned so my opinion is somewhat limited. It does have a clear easy to read digital display. Case is made of sturdy aluminum which gives it an edge up on others with a plastic case. It has connections for testing 20 and 24 pin ATX power, also for P4, P6, and P8 connectors. Molex connectors, SATA power connector, and floppy.

Cons: The only complaint I have so far is the poorly written manual, written in broken English. I will have to search some tech sites for proper explanation on how to use all features.