Macbook Pro 13 inch, version 10.13.6 early 2011, 4GB, 2.3 GHz Intel Core i5.
2.3GHz MacBook Pro (MC700LL/A). 4GB (two 2GB SO-DIMMs) of 1333MHz DDR3 SDRAM; supports up to 8GB. NOTE: This model has a slight dent on the casing lid, which does not affect functioning. Frequency: 50Hz to 60Hz.