Known technical errors in the PC Magazine review of the IBM 5155 (IBM Portable PC)
"Yes, the Portable PC has an eighth slot, one more than the XT, .."
No, the XT also has 8 slots. In fact, the 5155 contains an early version of the XT motherboard.
"The power supply, at 130 watts, ..."
The power supply is actually rated at 114W. (source: page 3-7 of the IBM 5155/5160 - Technical Reference)