A process for producing a H 2 -containing product and a CO-containing product with CO-containing product turndown capability, the process comprises a primary operating mode and a secondary operating mode; wherein during the primary operating mode and during the secondary operating mode: a crude synthesis gas is produced in a production unit, and the crude synthesis gas is withdrawn from the production unit; the crude synthesis gas is divided into a first divided portion and a second divided portion; the first divided portion is passed to a shift reactor as at least part of the feed to the shift reactor, reacted in the shift reactor to form a shift reactor effluent, and the shift reactor effluent is withdrawn from the shift reactor; a pressure swing adsorption unit feed comprising the shift reactor effluent is separated in a pressure swing adsorption unit to form the H 2 -containing product and a pressure swing adsorption unit by-product gas; concurrent with passing the first divided portion as feed to the shift reactor, the second divided portion of the crude synthesis gas is passed to a CO 2 removal unit, CO 2 is separated from the second divided portion in the CO 2 removal unit to form a CO 2 -depleted crude synthesis gas and a CO 2 -containing effluent; a cryogenic separation unit feed comprising at least a portion of the CO 2 -depleted crude synthesis gas is separated in a cryogenic separation unit to form at least the CO-containing product, a H 2 -rich stream, and a cryogenic separation unit by-product; and at least a portion of the H 2 -rich stream is passed to the pressure swing adsorption unit as part of the pressure swing adsorption unit feed; and wherein during the secondary operating mode: a portion or all of the CO-containing product is passed to the shift reactor as part of the feed to the shift reactor. a crude synthesis gas is produced in a production unit, and the crude synthesis gas is withdrawn from the production unit; the crude synthesis gas is divided into a first divided portion and a second divided portion; the first divided portion is passed to a shift reactor as at least part of the feed to the shift reactor, reacted in the shift reactor to form a shift reactor effluent, and the shift reactor effluent is withdrawn from the shift reactor; a pressure swing adsorption unit feed comprising the shift reactor effluent is separated in a pressure swing adsorption unit to form the H 2 -containing product and a pressure swing adsorption unit by-product gas; concurrent with passing the first divided portion as feed to the shift reactor, the second divided portion of the crude synthesis gas is passed to a CO 2 removal unit, CO 2 is separated from the second divided portion in the CO 2 removal unit to form a CO 2 -depleted crude synthesis gas and a CO 2 -containing effluent; a cryogenic separation unit feed comprising at least a portion of the CO 2 -depleted crude synthesis gas is separated in a cryogenic separation unit to form at least the CO-containing product, a H 2 -rich stream, and a cryogenic separation unit by-product; and at least a portion of the H 2 -rich stream is passed to the pressure swing adsorption unit as part of the pressure swing adsorption unit feed; and