📦 Genuine OEM Apple MacBook Pro 17" ExpressCard Slot Board (821-0101-A) + OWC eSATA Adapter
Original Factory Apple Component – ExpressCard/34 Slot Reader Assembly / Part Number 821-0101-A / Includes OWC eSATA ExpressCard Expansion Adapter / Compatible with 17-inch MacBook Pro A1297 (2011) / Technician Tested
Up for sale is a genuine original equipment manufacturer (OEM) Apple ExpressCard/34 reader board assembly (Part Number 821-0101-A) bundled with an OWC (Other World Computing) eSATA ExpressCard expansion card. Harvested from a 17-inch Apple MacBook Pro Unibody (Model A1297, Early 2011 / Late 2011 series), this internal board connects the ExpressCard expansion slot directly to the main logic board. Included in this bundle is an OWC eSATA ExpressCard/34 adapter to immediately add high-speed external eSATA storage connectivity to your laptop. Bench-tested by a technician and in 100% working order.
| Feature | Details |
| Brand / Manufacturer | Genuine Apple OEM & OWC (Other World Computing) |
| Apple Part Number | 821-0101-A (or equivalent A1297 ExpressCard flex assembly) |
| Hardware Compatibility | Apple MacBook Pro 17-inch Unibody (Model A1297 - Early 2011 & Late 2011) |
| Slot Standard | ExpressCard/34 |
| Bundled Adapter | OWC eSATA ExpressCard/34 Expansion Adapter Card |
| Interface Speed | eSATA High-Speed Data Protocol |
| Condition | Pre-owned / Grade A (Technician Tested & Fully Operational) |
• Functional Status: 100% fully operational hardware. Bench-tested on a diagnostic MacBook Pro A1297 logic board: the internal ExpressCard reader detects expansion cards smoothly, locks firmly, and the included OWC eSATA adapter mounts external eSATA storage drives reliably without dropouts.
• Physical & Cosmetic Quality: Grade A (Excellent Condition). The internal ribbon cable, contact pads, and pin headers are clean and free of corrosion or tears. The OWC ExpressCard module is physically intact with clean edge contacts.
• Defect / Parts Notice: None. Includes 1x Apple 821-0101-A ExpressCard reader board assembly and 1x OWC eSATA ExpressCard/34 adapter. Mounting screws are NOT included unless explicitly pictured.
• Instant High-Speed Storage Access: Adding the included OWC eSATA ExpressCard allows direct connectivity to external eSATA drive enclosures and RAID arrays for fast data transfers on legacy 17" MacBook Pro systems.
• Installation Tip: Ensure the laptop is powered down and the main battery is disconnected from the logic board prior to seating or unseating internal ribbon cables to prevent electrical shorts.
• Listing Inclusions: This listing includes one (1) genuine Apple 17" A1297 ExpressCard reader board (821-0101-A) and one (1) OWC eSATA ExpressCard adapter.
• Safe Transit: Securely packaged to ensure safe transit.
• Fast Dispatch: Ships within 1 business day of cleared payment.
• Tracking: Fully tracked shipping service standard on all orders.