Apple Macbookpro A1398 15

Screen Size: 15.4-inch (diagonal) LED-backlit widescreen display with IPS technology. Native Resolution: 2880-by-1800 pixels (Retina display) at 220 pixels per inch (ppi). Brightness & Contrast: 300 nits brightness with a 900:1 contrast ratio. Supported Scaled Resolutions: 1920×1200, 1680×1050, 1280×800, and 1024×640 pixels. ⚙️ Processor (CPU) & Memory Processor: Intel Core i7 quad-core processor (Typically a 2.2GHz base clock, Turbo Boost up to 3.4GHz with 6MB shared L3 cache). Memory: 16GB of 1600MHz DDR3L onboard memory. (Note: RAM is soldered directly onto the logic board and cannot be upgraded post-purchase). 💾 Storage & Graphics Storage: 256GB PCIe-based flash storage (SSD) . (Upgradeable using proprietary Apple NVMe slots or aftermarket adapters). Graphics: Intel Iris Pro Graphics (Integrated). External Video Support: Dual display and video mirroring. Simultaneously supports full native resolution on the built-in display and up to 3840-by-2160 pixels on up to two external displays via Thunderbolt. 🔌 Connectivity & Ports This chassis generation is widely praised for its versatile, legacy-friendly selection of built-in ports: [ Power: MagSafe 2 power port. Thunderbolt: Two Thunderbolt 2 ports (up to 20 Gbps). USB: Two USB 3 ports (up to 5 Gbps). HDMI: One dedicated HDMI port. Audio: 3.5mm headphone jack. Card Slot: SDXC card slot. 📡 Wireless & Multimedia Wi-Fi: 802.11ac Wi-Fi wireless networking; IEEE 802.11a/b/g/n compatible. Bluetooth: Bluetooth 4.0 / 4.2 wireless technology. Camera: 720p FaceTime HD camera. Audio: Stereo speakers with high dynamic range, dual microphones, and support for Apple iPhone headset with remote and microphone. ⌨️ Input & Battery Keyboard: Full-size backlit keyboard with ambient light sensor. Trackpad: Force Touch trackpad for precise cursor control and pressure-sensing capabilities. Battery: Built-in 99.5-watt-hour lithium-polymer battery. Battery Life: Rated for up to 9 hours of wireless web browsing or iTunes movie playback when new