MHz measures only processor internal clock speed, not application performance. Many factors affect application performance. Capacity available for end users may be less. The V.90 modems are designed to be capable of receiving data at up to 56 Kbps from a K56Flex or V.90 service provider, and transmitting data at up 31.2 Kbps. Public networks currently limit maximum download speeds to about 53 Kbps.
Actual speeds depend on many factors and are often less than the maximum possible.
Intel, Pentium II and Celeron are trademarks or registered trade marks of Intel Corporation. Microsoft and Windows are registered trademarks of Microsoft Corporation. Other company, product and service names may be trademarks or service marks of others. The keyboard has the familiar layout of a ThinkPad with function keys that allow you to quickly access system functions, such as power management control. The ThinkPad 390E has powerful new processors with new technology L2 cache.