USB mice and keyboards can usually be used with older computers that have PS/2 connectors with the aid of a small USB-to-PS/2 adapter. For mice and keyboards with dual-protocol support, an adaptor that contains no logic circuitry may be used: the hardware in the USB keyboard or mouse is designed to detect whether it is connected to a USB or PS/2 port, and communicate using the appropriate protocol. Converters also exist that connect PS/2 keyboards and mice (usually one of each) to a USB port. These devices present two HID endpoints to the system and use a microcontroller to perform bidirectional data translation between the two standards.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What do older computers have to have in order for USB mice and keyboards to be used?
Ah, so.. PS/2 connectors with the aid of a small USB-to-PS/2 adapter

There is a tendency to abandon traditionally gender-invariable adjectives in favour of marked ones, something prevalent in Occitan and French. Thus, one can find bullent/bullenta ("boiling") in contrast with traditional bullent/bullent.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What languages have a tendency to lose gender-invariable adjectives?
Ah, so.. Occitan and French

Meanwhile, the authorities in Glasgow, Scotland successfully petitioned the government to pass the Glasgow Police Act establishing the City of Glasgow Police in 1800. Other Scottish towns soon followed suit and set up their own police forces through acts of parliament. In Ireland, the Irish Constabulary Act of 1822 marked the beginning of the Royal Irish Constabulary. The Act established a force in each barony with chief constables and inspectors general under the control of the civil administration at Dublin Castle. By 1841 this force numbered over 8,600 men.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): When was Ireland's police force established?
Ah, so..
1822