Kensington Expert Trackball mouse USB Type-A Optical

Mouse
Movement detection technology	Optical
Buttons quantity	0
Device interface	USB Type-A
Input device
Movement detection technology	Optical
Buttons quantity	0
Device interface	USB Type-A
Technical details
Weight	12 oz (340.1 g)
Case or master carton dimensions (W x D x H)	11.3 x 11.2 x 8.6" (287 x 284.4 x 218.4 mm)
Software
Mac operating systems supported	Yes

System requirements
Mac operating systems supported	Yes
Weight & dimensions
Weight	12 oz (340.1 g)
Width	4.92" (125 mm)
Depth	5.75" (146 mm)
Height	2.5" (63.5 mm)
Packaging data
Package weight	35.2 oz (997 g)
Package width	10" (254 mm)
Package height	3.63" (92.2 mm)
Other features
Weight	12 oz (340.1 g)
USB 2.0 ports quantity	1
Package length	9.76" (24.8 cm)
Mouse dimensions (WxDxH)	4.92 x 5.75 x 2.5" (125 x 146 x 63.5 mm)
Compatible operating systems	Windows XP/Vista
Case or master carton dimensions (W x D x H)	11.3 x 11.2 x 8.6" (287 x 284.4 x 218.4 mm)
Logistics data
Case or master carton dimensions (W x D x H)	11.3 x 11.2 x 8.6" (287 x 284.4 x 218.4 mm)

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SKU	K64325	910-001822	910-002974	K72359WW	910-005469	910-005638
Manufacturer	Kensington	Logitech	Logitech	Kensington	Logitech	Logitech
Buttons quantity	0	N/A	N/A	4	N/A	N/A
Movement detection technology	Optical	Optical	Optical	Optical	Optical	N/A
Purpose	N/A	office	office	N/A	gaming	gaming
Device interface	USB Type-A	RF Wireless	RF Wireless	RF Wireless + Bluetooth	USB Type-A	RF Wireless
Scroll type	N/A	Wheel	Wheel	Ring	Wheel	Wheel
Connectivity technology	N/A	N/A	N/A	Wireless	N/A	N/A