Is the Lexmark CX730de fast enough for a busy office?

Yes. It is rated at 42 pages per minute in both color and mono, so color jobs do not slow the queue. That puts it in workgroup territory rather than small-office territory.

Does it print and scan in color?

It is a color laser multifunction: it prints, copies and scans. Scan output is handled as standard office document formats, and the single-pass feeder handles two-sided originals.

Can it print double-sided?

Yes, automatic duplex printing is standard on this class of Lexmark workgroup MFP. Duplex scanning through the document feeder also speeds up two-sided copies.

Is it suitable for a home office?

It works, but it is large, heavy and built for office volumes. A home user printing a few pages a week would be better served by a compact color laser or inkjet.

What connectivity does it offer?

This configuration lists USB. Network and wireless options vary by model and region, so confirm the exact variant before buying if shared network printing matters.

How does it compare with the HP Color LaserJet Enterprise MFP?

Both are 40-plus ppm color laser workgroup machines. Lexmark tends to emphasize speed and durable duty cycles, while HP offers a broader ecosystem of management tools; compare toner yields and service options.