Please mention BuySellZambia.com when contacting.
iMac all in one (21.5-inches,Mid2011) Processor 2.5 GHz intel core i5 Memory 4 GB 1333 MHz DDR3 Graphics AMD Radeon HD 6750M 512 MB
https://www.buysellzambia.com/ad/imac-all-in-one-on-sell/