Reading data from an old SCSI hard drive
Classically, you need a SCSI card, like Adaptec SCSI Card 29160 .
You connect it to a PCI slot, connect the SCSI drive to the card. Such cards have a SCSI interface. They also support booting from them.
But given that you need this on a laptop, it's more complicated. You could try to find something like Microtech 1M USB To SCSI Converter DB25F/USB but they are extremely expensive compared to a SCSI PCI card you can get from old recycled PCs/servers.