SanDisk 4GB SD Memory Card + Black USB Memory Card Reader for Garmin Nuvi 200W, 205W, 250W, 260W, 600, 610, 650, 660, 670, 680, 710, 750, 760, 770, 780, 850, 860, 880, 200, 250, 255, 260, 270, 300, 310, 350, 360, 370 550 660 This Combo Pack Includes: One Memory Card, One Memory Card Reader. Memory Card: Brand new SanDisk memory card. Type: Secure Digital (SD) card. Capacity: 4 GB Small - about the size of a postage stamp. Simple - as easy as plug-and-play. Economical - low power consumption is easy on device&apos;s batteries. Memory Card Reader: Brand new non-OEM. Simply plug in to your PC to start transferring photos, data or music. Ultra High Speed - Read: 4.3Mbps, Write: 1.3Mbps. LED indicator lights. Supports Windows XP, 2000, 98, and Mac OS 9.2 and higher