MARUSON 600VA/300W Standby UPS Battery Backup with 6 Outlets, Overload and Overcharge Protection, 860J Surge Protection, Status Indicators, UL Certified (POP-600)

I have used this for a few months now. I have it on my Fish tank. We have had several power outages and never had any issues with the UPS.

The vendor website specs say the POP-600 includes "USB Cable and Software CD". The POP-600 sold here has neither; nor does it have any place to plug in a USB cable. Which means when the power goes out, and the battery is drained your PC will crash... just like yanking the plug out of the wall.I also could not get it to function in two different outlets in my office. The troubleshooting guide said what it might be based on either 2 or 4 seconds between beeps... mine was 3 seconds. It acted like the battery wasn't connected, so I opened it and disconnected and reconnected the battery... took out the fuse and put it back... finally I have a steady green light after it says the battery is weak.Maybe Maruson was just dumping the prototypes through Amazon.It's been a bad week for UPS's. I also received an Ultra ULT31502 1000 UPS from somewhere else which was DOA.

I here buying a second unit - the first burnt up (the fuse welded to the plastic housing) after 5 years of constant use. I have no complaints about the product whatsoever - it works exactly as expected for what it's intended purpose is. I'm using it to protect ~$5,000 worth of sound equipment from brown and blackouts. Someone is always with the equipment in case of power failure, so not have an "auto-shutdown" feature is not important to me.

warranty and reliability suck. They do not make a quality product and the price is really high for what your getting.