Factory Part Number:
530975-341
579320-001
AT902AA
HSTNN-DB91
HSTNN-OB91
HSTNN-OB92
HSTNN-XB91
HSTNN-XB92

Compatible Models:
ProBook 4210s
ProBook 4310s
ProBook 4311s

Shipping Information:
We ship to worldwide range and the shipping is also free unless you request express delivery. The delivery to US will take about 6-10 business days by DHL eCommerce, and to the other most countries usually takes about 7~14 business days.

All packages will come with a tracking number, you will get an email of shipping information including the tracking number once your order is shipped out from our warehouse.

Please find the detail of the express as below:

Express Company	Estimated Delivery Time	Cost
EMS	5-10 business days	$28
UPS/DHL/Fedex	3-6 business days	$30

If your address can't be reached by above express company, please contact us by order@battery-adapter.com and inform us of your express company.