GRADE A2 Please be aware this unit has heavy scratches on the base wear on the keyboard & scratches & dents on lid. Storage drive is 128GB. Flash Storage The embedded 128GB PCIe SSD provides sequential read speeds up to 3.2 GB/s & sequential write speeds up to 2.2 GB/s. Retina Display The display in the Mac Book Pro features 500 nits & an increased contrast ratio delivering deeper blacks & brighter whites. Its larger pixel aperture & variable refresh rate make it more power efficient than previous generations. It also supports the P3 wide color gamut which features 25% more colors than the commonly used s RGB gamut for even more vibrant greens & reds. This helps ensure truer-to-life pictures with realistically vivid details essential for graphic design color grading & editing. Keyboard & Trackpad Interacting with the Mac Book Pro is a better experience all around. The keyboard has been redesigned to include a second-generation butterfly mechanism which has been refined for greater comfort & responsiveness. The Force Touch trackpad is also much larger giving your fingers more room to gesture & click. Thunderbolt 3 Thunderbolt 3 is a hardware interface that utilizes the reversible USB (Universal Serial Bus) Type-C connector. Doubling the speed of its predecessor Thunderbolt 3 features a maximum throughput of 40 Gb/s when used with compatible devices. The connector also transmits data via USB (Universal Serial Bus) 3.1 at up to 10 Gb/s & dual-bandwidth Display Port 1.2 means that you can connect up to two 4K displays simultaneously or one multi-panel 5K display. The Mac Book Pro has two ports sharing one dedicated bus..