G3 versus G4

I really hate APC Part Numbers... probably because my job requires me to listen to people reading their part numbers out over the phone.  If I get 1 digit of the typical 12 alphanumeric part number wrong, it can be entirely different unit....

So, I have simple 3-6 digit part numbers located on every picture.  The APC SURTD5000RMXLT3U-1TF3 is simply 593g4k.

On the APC SmartUPS Online RT Series, I added "G3" at the end of the normal part number to originally designate it as the 3rd generation.  While I later learned this was incorrect, the G3 designation stuck.    So when APC tweaked the series,  I just changed the G3 to G4.

So what was the tweek?....   The only noticeable change is that they replaced the serial RS232 com type port with a Cat5 type RS232 type port.

Also, there are some minor changes such as thermal profile and different certifications, but all in all they are functionally the same.

But for me, its a big difference (sometimes over $250) because the

• The G3 is older (before 2009)
• The G4 is newer and comes with rails ($30), the AP9619 card ($159)