Pros: Inexpensive and it works.

Cons: If you have more than 4 SATA drives and want to change a pair of drives (swap them out), you can't buy extra sleds anywhere (I have found none) so you have to unmount a drive from one of the 4 supplied sleds and replace it with a different drive. This is a royal pain. There need to be spare sleds available for purchase, especially given all the writeups where people broke one. Newegg doesn't appear to sell them, or at least no search I have been able to run there will turn up a part number to order a few. The internal PC wiring on this baby is on the wrong side. It is located against the mobo side of the drive. Most power cables aren't long enough to allow installing before slipping the unit into the box, and with all the SATA and power connectors on the bottom (wrong) side of the back, and hidden by the fan, it is almost impossible to hook up. The good news, if you make it, you probably won't have to do it but once, unless something burns out. Folks, these are minor but terminally annoying user unfriendly features, that should never have made it to a production piece of hardware.

Pros: -Attractively priced. -Claim to be higher wattage than standard 4' LED bulbs for fluorescent replacement, 50 watt equivalent instead of 35 watt.

Cons: - Packaging is deficient, bulbs easily damaged in shipment by dropping on an end. Protective tube around each bulb is SHORTER than the bulb, so can not absorb any impact shock. Bulb ends shatter (3 out of 4 of my first shipment). - NO WIRING DIAGRAM IS SUPPLIED BY VENDOR. When I ordered 12x of these bulbs, 8x of the bulbs came in a second shipment and were from a completely different vendor, who did supply a wiring diagram. Correct wiring appears to be to split the 110 and feed one side (hot) to one end and the other side (neutral) to the other end of the bulb. Pins on each end are shorted together and the bulbs appear to have no polarity so either end can accept the hot connection and the connection can be to either pin on an end. The replacement 4 bulbs for the damaged first shipment were the same make as the first shipment, and arrived undamaged, and again with no trace of a wiring diagram. These appear to be the standard offering from this vendor, so my conclusion is DO NOT EXPECT A WIRING DIAGRAM WITH THESE BULBS.

Overall Review: The bulbs appear to be brighter than my aging fluorescent tubes, which theoretically are a nominal 35 watts output. This suggests the LED bulbs may actually be the advertised 50 watt equivalent in lumens and this conversion will increase lighting intensity as I had hoped to do. Lumen output is given nowhere in the literature or on the bulbs, though a lot of other details are given, so this is 100% subjective observation on my part, and worth nothing. Interestingly, the alternative bulbs I received 8x of appear slightly brighter than the correct bulbs, again a subjective observation on my part and worth nothing. Still, I would order bulbs from the alternative vendor if I knew who he was. His bulb ends are rigid and appear stronger and will be less easily damaged in shipment. Yes, they came in the same too-short protective tubes, such that dropping the package on an end puts 100% of the impact stress on the bulb pin ends and thin plastic there.